not support web

[hcanyz]

I tried to compile the web platform, but got the following error.

/C:/Users/Admin/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/fnv-1.0.1/lib/src/fnv_constants.dart:3:26: Error: The integer literal 0xcbf29ce484222325 can't be represented exactly in JavaScript.
Try changing the literal to something that can be represented in JavaScript. In JavaScript 0xcbf29ce484222000 is the nearest value that can be represented exactly.
const int FNV1_64_INIT = 0xcbf29ce484222325;
                         ^^^^^^^^^^^^^^^^^^
/C:/Users/Admin/AppData/Local/Pub/Cache/hosted/pub.flutter-io.cn/fnv-1.0.1/lib/src/fnv_constants.dart:10:25: Error: The integer literal 0xffffffffffffffff can't be represented exactly in JavaScript.
Try changing the literal to something that can be represented in JavaScript. In JavaScript 0x10000000000000000 is the nearest value that can be represented exactly.
const int UINT64_MASK = 0xffffffffffffffff;
                        ^^^^^^^^^^^^^^^^^^
Failed to compile application.

[hcanyz]

It seems that the web platform should use BigInt to calculate.

[Midi12]

Yes, IIRC the compilation from Dart to JS doesn't handle 64 bit integers because the web target is only 32 bits or something like that. Unfortunately the primary goal of this library was to be a dependency for a console project.

If you want to contribute you're welcome to make a PR that enable the handling of both console and web targets.

[wjkoh]

Glad to see that the web compatible version is coming up! I've written a Web-compatible Dart function to generate a 64-bit FNV-1a hash for my own uses. If anyone needs a quick, copy-and-paste solution for a web-compatible function, feel free to check out: https://gist.github.com/wjkoh/39d9a108f3e73bc728172492670bb97a